store.exe ram size exchange 2010

BlenGroup
BlenGroup used Ask the Experts™
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WE have an 2010 exchange server running on 2008 Enterprise server with 48GB RAM. Store.exe is taking up around 45GB RAM. We have around 100 users on server with the largest user around 10GB. Is there a way to limit the amount of RAM store.exe is using?
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It is not recommended to limit the memory... usually store.exe will use the memory.
say if you install 60 GB of memory then it will use 50 GB.

Author

Commented:
I have a backup application that requires 2GB of RAM and from time to time it hangs up. The Vendor says that unless we can free up some RAM it will not work properly.
even if we can restrict the cache size using ADSIEDIT, i prefer to avoid this step.
it seems more likely that the issues are because of the large mailboxes, If possible, try reducing the mailbox sizes or moving  the emails to the .pst file.

Author

Commented:
Would Adding more RAM help solve the issue?
Nope, you have a lot of memory. One thing you can try is, before running the backup, restart the Exchange Store:
start /wait net stop msexchangeis
start /wait net start msexchangeis

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I do this to free up memory on a schedule (off-peak hours), and it works fine. It should guarantee you have enough free memory for the backup to run. If there are users connected, Outlook will show as being offline while the service is stopped (shouldn't be more than a few seconds).

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